Burner for blast-flames.



W. H. SCHULTE. BURNER FOR BLAST FLAMES.

APPLICATION FILED JAN. 16, 1909.

929,252 Patented July 27, 1909;

3 SHEETS-SHEET 1.

-Vih moo w; v (3 11 no I ['0 a W. H. SGHULTE. BUBNER FOR BLAST FLAMES.

APPLICATION FILED JAN. 16, 1909. QWQWB Patented July 27, 1909.

3 SHEETS-SHEET 2.

W. H. SGHULTE. BURNER FOR. BLAST FLAMES.

' APPLICATION FILED JAN. 16, 1909.

Patented July 27,1909.

3 3HEETS-SHEET 3.

A 5] mac n F01; 2% 13 J 01m 188, m 8

WILLIAM H. SCHULTE, OF TRENTON, NEW JERSEY.

- BURNER son nLes'r-rmiims;

Specification (a Letters Ya'tent;

Iatented ma 27, 1909,

Application filed .mnuar s, 1909. serial m. 472,576.

To-all whom it may concern:

lining is provided with Bolt known that 1, WILLIAM H. SG'HULTE, a citizen of the United States, residing'at Trenton, Mercer county, New Jersey, have invented certain new and useful Improvements in Burners for Blast-Flames, of which the following is a full, clear, and exact description.

My invention relates to an improved burner for a blast flame, the same being particularly useful in the melting of brass and other metals.

In the drawings, Figure 1 is a plan View of my improved burner as applied to a furnace, said View being= partly in section. Fig.2 is a side elevation of the same parts also partly in section. 'Fig. 3 is a relatively enlarged view of the burnerysaid elevation being partly in section. Fig.4 is a view of the inner end'of one of the burner'parts, detached. Fig. 5 is a planview of the same part. Fig. 6 is a front elevation of the parts shown in Fig. 3. j I

1 represents the casing or external wall of a furnace, the same having an inside lining 2, of a suitable fire-resistantmaterial. This an annular recess 2, best seen in Fig. 2.

2} represents a cover of any suitable form, having the draft outlet l.

5 represents a crucible arranged within the furnace and mounted upon a suitable sup-- port or base 6. 7 is the flame inlet, the same being coincident with the annular recessed portion. 2 and entering the sametangentially.

The burner is located at theouter end of the flame inlet 7, and is constructed substantially follows. 8 is the burner bracket for securing said burner to the wall 1 of the furnace. This bracket has a rearwardly extending hollow casing 9. In the particular form shown, 9 is an entrance pipe for an air supply used to secure a forced draft or blast. At the burner outlet I provide by preference a tapered converging wall .10. 11 is what I will term atl'uncate'tl cone having suitable guide flanges 11*, which center and guide said cone in the mouth of the outlet. The forced draft of air entering through the pipe 9 passes through the space between the external wall of the. cone and the wall 10 of the burner flame, said space constituting a tapered annular passage. By moving the cone to ard fro, the, ('FUSSSPU i-ional area oi this annular passage may b is a fuel pipe.

varied at will for the purposes ofadjust-- ment'. 11"'1l" are openings through the end of the cone 11 to permit air to pass to assist in atomizing the fuel. 12 islwhat I may term the high pressure air pipe. 13 These pipes 12'-1-3 are. mounted in an adjustable head 14, and rof erably serve as connectors between said head 14 and the cone 11, as best seen in Fig. '3. The nozzle end of the fuel pipe 13 maybe constructed in any suitable manner, but is preferably of the construction shown in Fig. 3, said 'nozzle being indicated at 15. This nozzle may be nothing more than a forward extension from the cone haviu therein the fuel passage 16 to conductthe fuel entering through pipe 13 up toa point directly in front of the forward end 12 of the high pressure air pipe 12. The forward end of the high pressure air pipe is preferably flattened, shown. The forward end of the nozzle may be somewhat recessed or grooved horizontally, as indicated at 15*, so that any overflow of the oil will occur directly in front of the air pipe 12. 17 is a screw carried-by the casing-9 of the burner and arranged to lock the block 14 at any desired position of adjustment. l8 ah adjusting set screw for the forward "end of the pipe 12, said set screw 18 being carried by the cone 'and so arranged as to not proportioned in such a manner as to secure the best results. lie-quantity of air which is permitted to pass through the space around the cone 1]. may be modified and varied, by shifting the position of the cone 11 within the burner outlet so as to. increase or decrease the cross-sectional area. of thespace between the external wall of the cone and the. internal wall 10 --of the outlet. This ad: jnstmcnt of the cone to and fro may be cti'cctcd by releasing set screw 17 and moving lllL block H to and fro. The supply ofair entering through the pipe 9 furnishes the. flame with the needed amount of oxygen to insure proper comlmstiou, said air supp? bciug uniformly distributed entirely aroui d and at the root of the flame by reason of f the cent 'alizing of the atomizing point relatively thereto. The flame entrance 7 enters the furnace tangentially so that the fiainel will take a spiral course entirely around the l crucible 5 therein. The recessed portion 2%. confines the flame to a certain extent, so as l to prevent its escaping too freely, whereby its energy will be expended in heating the crucible and the contents thereof before'it is permitted to escape. 'lhis annular space or chamber is of such area as to insure proper combustion.

'hat I claim is: 1

1. In a burner of the character described, a casing having a tapered outlet nozzle, two other nozzles arranged therein but slightly in advance thereof, one of the last two nozzles being slightly in advance of-the other, die last tvvo nozzles being adjustable relatively to the first. and means carried thercby for varying the cross sectional area of the tapered outlet nozzle.

2. in a burner of the character described, a casing having a tapered outlet nozzle, two other nozzles arranged therein but slightly in advance thereof, said two nozzles being adjustable relativel to the first, and means carried thereby for varying the cross sec- I tional area of the tapered outlet nozzle, said means comprising a truncated cone nien'lber one of said parts being shaped substantially to the ta iiercti wall of the outlet nozzle.

3. In a burner 01'' the chaiactcr described,

a casing having a tapered outlet nozzle, two

being movable to and fro in the outlet nozzle to 'ary the cross sectional area of the same.

4. in a furnace of the character described, a burner comprising a fuel supply nozzle,

an-air nozzle adjacent thereto for atoinizing fuel, an air blast nozzle having an admission opening around the trial nozzle and the first mentioned air supply nozzle, and means-"tor varying the cross-sectional area of the air blast nozzle, said means comprising a t-runrated (3(H1Q't1II1Z1gGd Within the frame 'ofthc burner, a tapered Wall relatively to the other, and an additional air bast passage through said cone.

ll ll'il ilitlli H. SCHULTE. lVit-nesscsz I R. lllironaric, lvl. l li (laminar.

adjacent to said cone, ad ustable to and tro. 

